Create (but do not yet write) a data file
create <filename> <datasetname0> [<datasetname1> ...] [<DataFile Options>]
Add specified data sets to the data file named
<filename>; if the file does not exist, it will be added to the DataFileList. Data files created in this way are only written at the end of coordinate processing, analyses, or via the writedata command. More information on data file format options.